ASME SA-213/SA-213M Grade TP304H Introduce
ASME SA-213/SA-213M Grade TP304H is a low alloy steel used in boilers and heat exchangers. It is a popular material for these applications due to its excellent corrosion resistance, high strength and good weldability. The alloy has been in production since 1961 and is available in a wide range of forms and grades, allowing for maximum flexibility and creativity when creating a project.
Smelting temperature:1215°C - 1876°C
Application:Seamless ferritic and austenitic alloy steel tubes for boilers, superheaters and heat exchangers
ASME SA-213/SA-213M Grade TP304H Material Chemical Composition
The chemical composition of the ASME SA-213/SA-213M Grade TP304H steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0450 |
| Nickel (Ni) | 8.0000 | 11.0000 |
| Manganese (Mn) | - | 2.0000 |
| Chromium (Cr) | 18.0000 | 20.0000 |
| Carbon (C) | 0.0400 | 0.1000 |
ASME SA-213/SA-213M Grade TP304H Material Mechanical Properties
The composition of ASME SA-213/SA-213M Grade TP304H steel is typically composed of iron and a variety of alloying elements. Typically, the alloying elements consist of carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, and nickel. These elements can be added in different proportions in order to provide the desired mechanical and physical properties.
The mechanical properties of the ASME SA-213/SA-213M Grade TP304H steel are as follows:
| YieldRp0.2 | ≤ 385 (MPa) |
| TeileRm | ≤ 682 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 42% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 432 |
ASME SA-213/SA-213M Grade TP304H Material Thermal Properties
The thermal performance parameters of the ASME SA-213/SA-213M Grade TP304H steel are as follows:
| Temperature (°C) | 34 | 112 | 147 |
| Modulus of elasticity (GPa) | - | 911 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 143 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 211 |
| Poisson’s coefficient, ν | - | - | 223 |
ASME SA-213/SA-213M Grade TP304H Material Machining Technology
Weldability is an important property of engineering and construction materials, as it determines how easy it is to join two pieces of the material together by welding. ASME SA-213/SA-213M Grade TP304H steel is highly weldable due to its low carbon content. This low carbon content makes it easier to achieve good weld quality, and it also reduces the chances of 'hot cracking' – a type of welding defect. Grade T-14 steels have particularly good weldability, while grade T-12 steels have slightly poorer weldability.